<template>
  <div class="watch5">
    <h1>情况五：监视上述的多个数据</h1>
    <h2>姓名：{{ person.name }}</h2>
    <h2>年龄：{{ person.age }}</h2>
    <h2>汽车：{{ person.car.c1 }}、{{ person.car.c2 }}</h2>
    <button @click="changeName">修改名字</button>
    <button @click="changeAge">修改年龄</button>
    <button @click="changeC1">修改第一台车</button>
    <button @click="changeC2">修改第二台车</button>
    <button @click="changeCar">修改整个车</button>
  </div>
</template>
<script lang="ts" setup>
import { reactive, watch } from "vue";
// 数据
let person = reactive({
  name: "张三",
  age: 18,
  car: { c1: "奔驰", c2: "宝马" },
});
// 方法
function changeName() {
  person.name += "~";
}
function changeAge() {
  person.age += 1;
}
function changeC1() {
  person.car.c1 = "奥迪";
}
function changeC2() {
  person.car.c2 = "保时捷";
}
function changeCar() {
  person.car = { c1: "雅迪", c2: "艾玛" };
}
// 监听
// 情况五:监视上述多个数据
watch(
  [() => person.name, person.car],
  (newValue, oldValue) => {
    console.log("person变化了", newValue, oldValue); //changCar没变化,别的都可以监听到
  },
  { deep: true }
);
</script>
<style scoped>
.watch5 {
  width: 80vw;
  height: 80vh;
  border: 1px solid red;
}
</style>